Links to resources that will help complete the picture and provide more information
http://www.hydro.org/ - This is the National Hydropower Association website that explains all things hydro.
http://www.eia.gov/energy_in_brief/article/hydropower.cfm
http://www.smallhydro.co/
https://www.americanrivers.org/
http://www.colorado.gov/cs/Satellite/GovEnergyOffice/CBON/1251597774824
http://www.dameffects.org/index.html
http://www.nrel.gov/docs/fy01osti/29065.pdf
http://nhaap.ornl.gov/
http://www.eia.gov/energy_in_brief/article/hydropower.cfm
http://www.smallhydro.co/
https://www.americanrivers.org/
http://www.colorado.gov/cs/Satellite/GovEnergyOffice/CBON/1251597774824
http://www.dameffects.org/index.html
http://www.nrel.gov/docs/fy01osti/29065.pdf
http://nhaap.ornl.gov/